Reversible Control by Light of the High‐Spin Low‐Spin Elastic Interface inside the Bistable Region of a Robust Spin‐Transition Single Crystal |
| |
| Authors: | Mouhamadou Sy Dr. Damien Garrot Dr. Ahmed Slimani Miguel Páez‐Espejo Prof. Dr. François Varret Prof. Dr. Kamel Boukheddaden |
| |
| Affiliation: | 1. Groupe d'Etudes de la Matière Condensée, CNRS-Université de Versailles;2. Université Paris Saclay, Versailles Cedex, France;3. Laboratoire des Matériaux Ferroélectriques, Département de Physique, Faculté des Sciences de Sfax, SFax, Tunisia |
| |
| Abstract: | By using a weak modulated laser intensity we have succeeded in reversibly controlling the dynamics of the spin‐crossover (SC) single crystal [{Fe(NCSe)(py)2}2(m‐bpypz)] inside the thermal hysteresis. The experiment could be repeated several times with a reproducible response of the high‐spin low‐spin interface and without crystal damage. In‐depth investigations as a function of the amplitude and frequency of the excitation brought to light the existence of a cut‐off frequency ca. 1.5 Hz. The results not only document the applicability of SC materials as actuators, memory devices, or switches, but also open a new avenue for the reversible photo‐control of the spin transition inside the thermal hysteresis. |
| |
| Keywords: | elastic interface optical microscopy phase transition spatio-temporal properties spin-crossover |
|
|
